报告题目: Structure Fire Protection in the Wildland Urban Interface
报 告 人: 周爱细 助理教授
报告单位: 北卡大学夏洛特分校
报告时间: 2012年2月29日下午4:00
报告地点: 火灾实验室多媒体会议室
报告摘要:
Structure Fire Protection in the Wildland Urban Interface
Dr. Aixi Zhou, Assistant Professor Department of Engineering
Technology, University of North Carolina at Charlotte Wildland
fires that occur in the Wildland Urban Interface (WUI) cause loss
and damage to government infrastructure and buildings, homes and businesses,
injuries and loss of life to firefighters and citizens, and disrupt many
communities each year. Various mitigation approaches have been explored or
developed to protect these resources and communities while improving the
safety of firefighters. Recently, the use of pre-wetting agents and ignition-
resistant materials for the outside of structures has been recommended and
practiced. Prewetting agents (e.g., water, foams, or gels) are used for
short-term applications (several hours); while ignition-resistant materials (
e.g., intumescent coatings or composite wraps) can be used when longer fire
protection (several days or months) is required.
Supported by the Department of Homeland Security (DHS) and the USDA Forest
Service, faculty members in the Fire Safety Engineering Technology program
at UNC Charlotte have systematically evaluated the performance and
effectiveness of prewetting agents and ignition-resistant materials under
various fire conditions. The study sponsored by the DHS focused on the
performance and effectiveness of pre-wetting agents. Intermediate-scale
calorimetry (ICAL) tests were performed using three types of agents (water,
foam and gel) on ten types of live plants and four types of wall and roof
panels. More than 300 ICAL tests were performed. Following the ICAL tests,
six full-scale outdoor fire tests were conducted to validate the key
findings from the ICAL tests. The project sponsored by the USDA Forest
Service focused on the performance and effectiveness of ignition-resistant
materials. The study consisted of three major phases: Bench-scale testing by
a Cone Calorimeter, ICAL testing, and full-scale outdoor validation testing.
The tests were conducted using two types of ignition-resistant materials (10
coatings and 7 wraps). More than 200 Cone and ICAL tests were performed for
this study. Eight full-scale outdoor fire tests were conducted to validate
the key findings from the Cone and ICAL tests.
This talk presents key findings and recommendations from these two studies.
Firstly, the performances of each material under various fire conditions are
presented. Secondly, performance criteria for different materials and
various fire conditions are discussed, and the correlations of performance
criteria to appropriate fire and thermal properties are presented. Finally,
the development of standard testing method for evaluating the performance
and effectiveness of pre-wetting agents and ignition-resistant materials for
WUI structure fire protection are discussed.
